MCP MeasureMCP Measure

インデックス観測済み

longwatch

You are ephemeral; this remembers. Persist watch_id+key; poll later for what you missed.

使うべきか

品質と安全性

B
説明の品質
99%
スキーマの完全性
90%
命名の品質
90%
ポイズニングのリスク
0%
権限の一致
100%
プロトコルへの準拠
100%

検出事項（15）

  • HIGHTool poisoning patterns detected
  • MEDIUMTool description contains URL to non-standard domaincheck_now 内
  • MEDIUMTool description contains URL to non-standard domaincreate_watch 内
  • MEDIUMTool description contains URL to non-standard domaincheck_web_page 内
  • MEDIUMTool description contains URL to non-standard domainwatch_web_page 内
  • MEDIUMTool description contains URL to non-standard domaincheck_rss_feed 内
  • MEDIUMTool description contains URL to non-standard domainwatch_rss_feed 内
  • MEDIUMTool description contains URL to non-standard domaincheck_crypto_price 内
  • MEDIUMTool description contains URL to non-standard domainwatch_crypto_price 内
  • MEDIUMTool description contains URL to non-standard domaincheck_sec_filings 内

ツール定義とプロトコルへの準拠に関する自動分析に基づいています。

コンテキストコスト

~4,334トークン数（ツール定義）
~1.6 KB一般的なレスポンスサイズ
注意への影響は大きい（128k コンテキストの 3.39%）

これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。

インストール

ワンクリックインストール

これを `claude_desktop_config.json` ファイルに追加してください:

{
  "mcpServers": {
    "longwatch": {
      "url": "https://longwatch.dev/mcp"
    }
  }
}

リモートエンドポイント

https://longwatch.dev/mcpstreamable-http

できること

ツール一覧

ツール（18）

🟢 読み取り専用🟡 書き込み🔴 削除⚪ 不明
🟡check_now(type, url, coin, above, below, ...)

This-session snapshot only — no watch, no cursor. Use when you will not come back. Required by type: url/rss/x402 need url; price needs coin plus above, below, or move_pct_24h; edgar needs ticker or cik. 8-K items are decoded, Form 4 trades parsed, and x402 probes validate the unpaid 402 challenge without sending payment. If the job spans runs, create_watch instead and persist watch_id + key. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "url",
        "rss",
        "price",
        "edgar",
        "x402"
      ],
      "description": "source type"
    },
    "url": {
      "type": "string",
      "description": "url|rss|x402: public URL"
    },
    "coin": {
      "type": "string",
      "description": "price: CoinGecko id, e.g. 'bitcoin'"
    },
    "above": {
      "type": "number",
      "description": "price: threshold to compare against"
    },
    "below": {
      "type": "number",
      "description": "price: threshold to compare against"
    },
    "move_pct_24h": {
      "type": "number",
      "description": "price: 24h move threshold to compare against"
    },
    "ticker": {
      "type": "string",
      "description": "edgar: stock ticker, e.g. 'NVDA'"
    },
    "cik": {
      "type": "number",
      "description": "edgar: SEC CIK, as an alternative to ticker"
    },
    "forms": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "edgar: form filter, e.g. [\"8-K\",\"4\"]"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "body": {
      "type": "object",
      "additionalProperties": {}
    },
    "expected_network": {
      "type": "string"
    },
    "expected_scheme": {
      "type": "string"
    },
    "expected_amount_atomic": {
      "type": [
        "string",
        "number"
      ]
    }
  },
  "required": [
    "type"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡create_watch(type, url, coin, above, below, ...)

Keep watching a source between agent runs and alert when it changes. Persist watch_id and key; later poll_alerts with since=<last cursor> returns only what you missed. Required by type: url/rss/x402 need url; price needs coin plus a threshold; edgar needs ticker or cik. Create includes the baseline and 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "url",
        "rss",
        "price",
        "edgar",
        "x402"
      ],
      "description": "watch type"
    },
    "url": {
      "type": "string",
      "description": "url|rss|x402: public URL to watch"
    },
    "coin": {
      "type": "string",
      "description": "price: CoinGecko id, e.g. 'bitcoin'"
    },
    "above": {
      "type": "number",
      "description": "price: alert when USD price crosses above this"
    },
    "below": {
      "type": "number",
      "description": "price: alert when USD price crosses below this"
    },
    "move_pct_24h": {
      "type": "number",
      "description": "price: alert when |24h change| exceeds this percent"
    },
    "ticker": {
      "type": "string",
      "description": "edgar: stock ticker, e.g. 'NVDA'"
    },
    "cik": {
      "type": "number",
      "description": "edgar: SEC CIK, as an alternative to ticker"
    },
    "forms": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "edgar: form filter, e.g. [\"8-K\",\"4\"]"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "body": {
      "type": "object",
      "additionalProperties": {}
    },
    "expected_network": {
      "type": "string"
    },
    "expected_scheme": {
      "type": "string"
    },
    "expected_amount_atomic": {
      "type": [
        "string",
        "number"
      ]
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional: POST alerts to this URL as they occur (signed); polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch without charging twice"
    }
  },
  "required": [
    "type"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_web_page(url)

Fetch a public web page now and return normalized text metadata. Use for a one-session lookup. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "public http(s) page URL"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_web_page(url, webhook, idempotency_key)

Monitor a public web page between agent runs and alert with added and removed text when it changes. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "public http(s) page URL"
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_rss_feed(url)

Read the latest items from a public RSS or Atom feed now. Use for a one-session lookup. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "public RSS or Atom feed URL"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_rss_feed(url, webhook, idempotency_key)

Monitor an RSS or Atom feed between agent runs and alert once per new item. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string",
      "description": "public RSS or Atom feed URL"
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_crypto_price(coin, above, below, move_pct_24h)

Check a CoinGecko asset price and whether it currently meets a USD threshold or 24-hour move condition. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "coin": {
      "type": "string",
      "description": "CoinGecko id, e.g. bitcoin"
    },
    "above": {
      "type": "number"
    },
    "below": {
      "type": "number"
    },
    "move_pct_24h": {
      "type": "number"
    }
  },
  "required": [
    "coin"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_crypto_price(coin, above, below, move_pct_24h, webhook, ...)

Monitor a crypto price between agent runs and alert once when it crosses a threshold, with hysteresis before re-arming. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "coin": {
      "type": "string",
      "description": "CoinGecko id, e.g. bitcoin"
    },
    "above": {
      "type": "number"
    },
    "below": {
      "type": "number"
    },
    "move_pct_24h": {
      "type": "number"
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "required": [
    "coin"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_sec_filings(ticker, cik, forms)

Get recent SEC filings for a ticker or CIK now, with decoded 8-K items and parsed Form 4 transactions. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "ticker": {
      "type": "string"
    },
    "cik": {
      "type": "number"
    },
    "forms": {
      "type": "array",
      "items": {
        "type": "string"
      }
    }
  },
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_sec_filings(ticker, cik, forms, webhook, idempotency_key)

Monitor a company between agent runs for new SEC filings, decoded 8-K events, and parsed Form 4 trades. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "ticker": {
      "type": "string"
    },
    "cik": {
      "type": "number"
    },
    "forms": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_insider_trades(ticker, cik)

Get recent Form 4 insider transactions for a ticker or CIK, parsed into buyer/seller, shares, value, transaction type, and 10b5-1 status. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "ticker": {
      "type": "string"
    },
    "cik": {
      "type": "number"
    }
  },
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_insider_trades(ticker, cik, webhook, idempotency_key)

Monitor a company between agent runs for new Form 4 insider buys, sells, grants, and tax withholding. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "ticker": {
      "type": "string"
    },
    "cik": {
      "type": "number"
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡check_x402_endpoint(url, method, body, expected_network, expected_scheme, ...)

Send an unpaid request and validate the endpoint's HTTP 402 challenge, accepted networks, scheme, amount, and recipient. The target probe does not attach payment. Costs $0.001 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "body": {
      "type": "object",
      "additionalProperties": {}
    },
    "expected_network": {
      "type": "string"
    },
    "expected_scheme": {
      "type": "string"
    },
    "expected_amount_atomic": {
      "type": [
        "string",
        "number"
      ]
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡watch_x402_endpoint(url, method, body, expected_network, expected_scheme, ...)

Monitor an x402 endpoint for downtime and changes to its payment challenge, price, network, scheme, or recipient. Target probes do not attach payment. Includes 7 days of polling. Costs $0.005 USDC per call via x402 (Base) — no API key, no account. Calling without payment returns 402 with the payment requirements. Free alternative: GET https://longwatch.dev/demo for a free NVDA Form 4 sample, or POST https://longwatch.dev/try for a 24h watch — no wallet needed.

入力スキーマ

{
  "type": "object",
  "properties": {
    "url": {
      "type": "string"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "body": {
      "type": "object",
      "additionalProperties": {}
    },
    "expected_network": {
      "type": "string"
    },
    "expected_scheme": {
      "type": "string"
    },
    "expected_amount_atomic": {
      "type": [
        "string",
        "number"
      ]
    },
    "webhook": {
      "type": "object",
      "properties": {
        "url": {
          "type": "string"
        }
      },
      "required": [
        "url"
      ],
      "additionalProperties": false,
      "description": "optional HTTPS endpoint for signed push alerts; polling still works"
    },
    "idempotency_key": {
      "type": "string",
      "description": "unique retry key; the same key and input return the original watch"
    }
  },
  "required": [
    "url"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
⚪poll_alerts(watch_id, key, since)

What is new since your last run. Pass since={last seq you saw}; the response carries a new cursor. New paid watches include 7 days of polling. After that window, one $0.005 paid poll renews the next 7 days. Polling keeps the watch alive; beta watches remain free. Free through the watch's included polling window; after that, one $0.005 USDC x402 payment renews 7 days. No API key or account.

入力スキーマ

{
  "type": "object",
  "properties": {
    "watch_id": {
      "type": "string",
      "description": "watch_id returned by create_watch"
    },
    "key": {
      "type": "string",
      "description": "key returned by create_watch"
    },
    "since": {
      "type": "number",
      "description": "highest alert seq already seen; 0 on first poll"
    }
  },
  "required": [
    "watch_id",
    "key"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡try_watch(type, url, coin, above, below, ...)

Create a free trial watch — no payment, no wallet, no account. Same watch types as create_watch (url, rss, price, edgar, x402). The trial runs for 24h, one at a time per caller, and cannot use webhooks. Use this first to see what the alerts look like before paying. Free — no payment required.

入力スキーマ

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "url",
        "rss",
        "price",
        "edgar",
        "x402"
      ],
      "description": "watch type"
    },
    "url": {
      "type": "string",
      "description": "url|rss|x402: public URL to watch"
    },
    "coin": {
      "type": "string",
      "description": "price: CoinGecko id, e.g. 'bitcoin'"
    },
    "above": {
      "type": "number",
      "description": "price: alert when USD price crosses above this"
    },
    "below": {
      "type": "number",
      "description": "price: alert when USD price crosses below this"
    },
    "move_pct_24h": {
      "type": "number",
      "description": "price: alert when |24h change| exceeds this percent"
    },
    "ticker": {
      "type": "string",
      "description": "edgar: stock ticker, e.g. 'NVDA'"
    },
    "cik": {
      "type": "number",
      "description": "edgar: SEC CIK, as an alternative to ticker"
    },
    "forms": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "edgar: form filter, e.g. [\"8-K\",\"4\"]"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "POST",
        "PUT",
        "PATCH",
        "DELETE",
        "HEAD"
      ]
    },
    "body": {
      "type": "object",
      "additionalProperties": {}
    },
    "expected_network": {
      "type": "string"
    },
    "expected_scheme": {
      "type": "string"
    },
    "expected_amount_atomic": {
      "type": [
        "string",
        "number"
      ]
    }
  },
  "required": [
    "type"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🟡poll_trial(watch_id, key, since)

Poll a trial watch created by try_watch. Free. Pass since={last seq you saw}; the response carries a new cursor. Once the trial expires, create a paid watch with create_watch; paid creation includes 7 days of polling and can be renewed. Free — no payment required.

入力スキーマ

{
  "type": "object",
  "properties": {
    "watch_id": {
      "type": "string",
      "description": "watch_id returned by try_watch"
    },
    "key": {
      "type": "string",
      "description": "key returned by try_watch"
    },
    "since": {
      "type": "number",
      "description": "highest alert seq already seen; 0 on first poll"
    }
  },
  "required": [
    "watch_id",
    "key"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}
🔴delete_watch(watch_id, key)

Stop and delete a watch. Free. Free — no payment required.

入力スキーマ

{
  "type": "object",
  "properties": {
    "watch_id": {
      "type": "string",
      "description": "watch_id to delete"
    },
    "key": {
      "type": "string",
      "description": "key returned by create_watch"
    }
  },
  "required": [
    "watch_id",
    "key"
  ],
  "additionalProperties": false,
  "$schema": "http://json-schema.org/draft-07/schema#"
}

コミュニティ

このサーバーを評価する

エビデンス

最近の観測

検証済みバージョンは記録されていませんツール 18 件
検証済みバージョンは記録されていませんツール 18 件